• APS-C 369.7mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • 4/3 226.2mm2
  • 20.3 megapixels
  • ISO 200 - 25,600

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Differences

Pentax K-01 advantages over Olympus E-M10 IV

  • Larger sensor
    APS-C vs 4/3
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 4.81 vs 3.36 microns
    Better low-light and dynamic range (all else equal)
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos

Olympus E-M10 IV advantages over Pentax K-01

  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Shoot 4K video
    4K (DCI) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • More telephoto lens reach
    84 mm vs 61 mm
    Capture objects farther away with the kit lens
  • Newer
    4 years vs 13 years old
    Newer cameras often support more advanced features
  • More pixels
    20.3 vs 16.3 megapixels
    Higher resolution photos
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Wider angle kit lens
    28 mm vs 61 mm
    Capture more of the scene with the included lens
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/4000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

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Buy the Pentax K-01
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  • Body Only
  • Kit with 40mm Lens
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Buy the Olympus E-M10 IV
Body Only
  • Body Only
  • Kit with 14-42mm Lens
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Review Excerpt

  • Very good image quality and excellent high ISO performance. Premium build quality. In-body image stabilization. Lots of creative features. Full HD movie capture with manual exposure control.

  • Barely any smaller than a standard SLR, but lacks viewfinder and phase-detect autofocus. Contrast-detect AF is slow and unreliable. Body design is clumsy and uncomfortable. Very slow raw burst shooting.

  • Read our Pentax K-01 Review

The Competition

Compared to Samsung NX10

Pentax K-01
Samsung NX10
  • $359
  • APS-C
  • Lens selection
  • Focus peaking
  • $700
  • APS-C
  • Less expensive
  • Eye-level viewfinder

Compare Pentax K-01 vs Samsung NX10

Olympus E-M10 IV
Samsung NX10
  • $666
  • 4/3
  • Lens selection
  • Focus peaking
  • $700
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 IV vs Samsung NX10

Compared to Samsung NX20

Pentax K-01
Samsung NX20
  • $359
  • APS-C
  • Lens selection
  • Focus peaking
  • $400
  • APS-C
  • Eye-level viewfinder
  • Tiltable Screen

Compare Pentax K-01 vs Samsung NX20

Olympus E-M10 IV
Samsung NX20
  • $666
  • 4/3
  • Lens selection
  • Focus peaking
  • $400
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus E-M10 IV vs Samsung NX20

Compared to Samsung NX30

Pentax K-01
Samsung NX30
  • $359
  • APS-C
  • Lens selection
  • In-Camera Image Stabilization
  • $899
  • APS-C
  • Tilt-swivel screen
  • Eye-level viewfinder

Compare Pentax K-01 vs Samsung NX30

Olympus E-M10 IV
Samsung NX30
  • $666
  • 4/3
  • Lens selection
  • In-Camera Image Stabilization
  • $899
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compare Olympus E-M10 IV vs Samsung NX30

Compared to Olympus E-M5 III

Pentax K-01
Olympus E-M5 III
  • $359
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $924
  • 4/3
  • Tilt-swivel screen
  • Eye-level viewfinder

Compare Pentax K-01 vs Olympus E-M5 III

Olympus E-M10 IV
Olympus E-M5 III
  • $666
  • 4/3
  • Less expensive
  • Longer video battery life
  • $924
  • 4/3
  • Tilt-swivel screen
  • High resolution composite

Compare Olympus E-M10 IV vs Olympus E-M5 III

Compared to Panasonic G100

Pentax K-01
Panasonic G100
  • $359
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $599
  • 4/3
  • Tilt-swivel screen
  • Eye-level viewfinder

Compare Pentax K-01 vs Panasonic G100

Olympus E-M10 IV
Panasonic G100
  • $666
  • 4/3
  • In-Camera Image Stabilization
  • More telephoto lens reach
  • $599
  • 4/3
  • Less expensive
  • Tilt-swivel screen

Compare Olympus E-M10 IV vs Panasonic G100

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